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CN108698278B - Resin molded article, molding device, molding method, and mold - Google Patents

Resin molded article, molding device, molding method, and mold Download PDF

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Publication number
CN108698278B
CN108698278B CN201780009603.XA CN201780009603A CN108698278B CN 108698278 B CN108698278 B CN 108698278B CN 201780009603 A CN201780009603 A CN 201780009603A CN 108698278 B CN108698278 B CN 108698278B
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partition member
resin
runner
runner groove
molding
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CN108698278A (en
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志田健二
白鸟武彦
永井绘理果
大须贺敏亨
佐藤由纪
高尾典弘
井出征秀
浜滝贵康
近藤春久
石川恭启
佐佐木茂典
长嶋正亲
安永亮彦
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Bandai Co Ltd
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Bandai Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

本发明提供一种能够缩短成形所需时间的树脂成型品。一种树脂成型品，其由多种树脂成形，在浇道具有第1树脂和第2树脂合流而成的联合部，所述联合部具有由所述第1树脂成形的第1联合部以及由所述第2树脂成形的第2联合部，所述第1联合部形成为具有与所述第2联合部的一部分接触的壁部的凹形状。

Figure 201780009603

The present invention provides a resin molded product capable of shortening the time required for molding. A resin molded product molded from a plurality of resins, having a joint portion formed by confluence of a first resin and a second resin in a runner, the joint portion having a first joint portion molded from the first resin, and a joint portion formed from the first resin. In the second resin-molded second joint portion, the first joint portion is formed in a concave shape having a wall portion in contact with a part of the second joint portion.

Figure 201780009603

Description

树脂成型品、成形装置、成形方法以及模具Resin molded product, molding device, molding method, and mold

技术领域technical field

本发明涉及树脂成型品、成形装置、成形方法以及模具。The present invention relates to a resin molded product, a molding apparatus, a molding method, and a mold.

背景技术Background technique

在例如使用多种树脂来成形的多色成形物中，存在不同的树脂在浇道部分相互连接而成的构件。在专利文献1中，记载有成形这样的多色成形物的成形装置。在专利文献1所记载的成形装置中，在模具的浇道槽内设置分隔构件，分隔构件阻止自浇道槽的一方流过来的1次成形树脂的流动，在1次成形树脂固化后，自浇道槽的另一方流过来不同于1次成形树脂的2次成形树脂。此时，通过利用2次成形树脂的流动压力将分隔构件向浇道槽外推压，使2次成形树脂流入曾经是分隔构件所在的位置，与1次成形树脂熔接。这样的话，形成由1次成形树脂和颜色不同于1次成形树脂的2次成形树脂构成的多色成形物。For example, in a multi-color molded product molded using a plurality of resins, there is a member in which different resins are connected to each other in the runner portion. In Patent Document 1, a molding apparatus for molding such a multicolor molded product is described. In the molding apparatus described in Patent Document 1, a partition member is provided in the runner groove of the mold, and the partition member blocks the flow of the primary molding resin flowing from one side of the runner groove, and after the primary molding resin is cured, it is automatically From the other side of the runner, the secondary molding resin, which is different from the primary molding resin, flows. At this time, by pressing the partition member to the outside of the runner groove by the flow pressure of the secondary molding resin, the secondary molding resin flows into the position where the partition member used to be, and is fused with the primary molding resin. In this way, a multi-colored molded product is formed which consists of the primary molding resin and the secondary molding resin having a color different from the primary molding resin.

现有技术文献prior art literature

专利文献Patent Literature

专利文献1：日本特开2005－046387号公报Patent Document 1: Japanese Patent Laid-Open No. 2005-046387

发明内容SUMMARY OF THE INVENTION

发明要解决的问题Invention to solve problem

但是，在专利文献1所记载的成形装置中，若2次成形树脂在1次成形树脂固化前到达分隔构件，则存在1次成形树脂和2次成形树脂在曾经是分隔构件所在的位置混合的情况。因此，必须延迟2次成形树脂的注塑等来调整注塑时机，使得2次成形树脂在1次成形树脂固化后再到达分隔构件，如此，在成形上需要花费时间。However, in the molding apparatus described in Patent Document 1, if the secondary molding resin reaches the partition member before the primary molding resin is cured, the primary molding resin and the secondary molding resin may be mixed at the position where the partition member used to be. Happening. Therefore, it is necessary to adjust the injection timing by delaying the injection of the secondary molding resin so that the secondary molding resin reaches the partition member after the primary molding resin is cured, which takes time for molding.

本发明提供一种能够缩短成形所需时间的树脂成型品。The present invention provides a resin molded product capable of shortening the time required for molding.

用于解决问题的方案solution to the problem

采用本发明的一技术方案，例如，是一种树脂成型品，其由多种树脂成形，在浇道具有第1树脂和第2树脂合流而成的联合部，所述联合部具有由所述第1树脂成形的第1联合部以及由所述第2树脂成形的第2联合部，所述第1联合部形成为具有与所述第2联合部的一部分接触的壁部的凹形状。According to one aspect of the present invention, for example, a resin molded product is formed of a plurality of resins, and has a joint portion in which a first resin and a second resin are merged in a runner, and the joint portion has a joint formed by the The first joint portion molded from the first resin and the second joint portion formed from the second resin are formed in a concave shape having a wall portion that is in contact with a part of the second joint portion.

发明的效果effect of invention

采用本发明，能够提供一种能够缩短成形所需时间的树脂成型品。According to the present invention, it is possible to provide a resin molded product that can shorten the time required for molding.

附图说明Description of drawings

图1是本发明的实施方式的成形装置的剖面图。FIG. 1 is a cross-sectional view of a molding apparatus according to an embodiment of the present invention.

图2是分隔构件的主要部分立体图。FIG. 2 is a perspective view of a main part of a partition member.

图3的(A)是浇道槽的主要部分立体图，图3的(B)是表示分隔构件为退避状态的浇道槽的主要部分立体图，图3的(C)是浇道槽内的分隔构件的放大立体图。FIG. 3(A) is a perspective view of a main part of a runner, FIG. 3(B) is a perspective view of a main part of the runner showing the partition member in a retracted state, and FIG. 3(C) is a partition in the runner Enlarged perspective view of the component.

图4的(A)是本发明的第一实施方式的树脂成型品的浇道的立体图，图4的(B)是本发明的第一实施方式的树脂成型品的浇道的剖面图。4(A) is a perspective view of the runner of the resin molded product according to the first embodiment of the present invention, and FIG. 4(B) is a cross-sectional view of the runner of the resin molded product according to the first embodiment of the present invention.

图5的(A)是图4的树脂成型品的浇道的立体图，图5的(B)是图4的树脂成型品的浇道的剖面图。FIG. 5(A) is a perspective view of the runner of the resin-molded product of FIG. 4 , and FIG. 5(B) is a cross-sectional view of the runner of the resin-molded product of FIG. 4 .

图6的(A)是表示第1树脂注塑完成后的模具的剖面图，图6的(B)是表示第2树脂注塑完成后的模具的剖面图。FIG. 6(A) is a cross-sectional view showing the mold after the injection of the first resin is completed, and FIG. 6(B) is a cross-sectional view showing the mold after the injection of the second resin is completed.

图7是本发明的第二实施方式的浇道槽的主要部分剖面图。7 is a cross-sectional view of a main part of a runner groove according to a second embodiment of the present invention.

图8的(A)是表示第1树脂注塑完成后的模具的剖面图，图8的(B)是表示第2树脂注塑完成后的模具的剖面图。FIG. 8(A) is a cross-sectional view showing the mold after the injection of the first resin is completed, and FIG. 8(B) is a cross-sectional view showing the mold after the injection of the second resin is completed.

图9的(A)是本发明的第二实施方式的树脂成型品的浇道的立体图，图9的(B)是本发明的第二实施方式的树脂成型品的浇道的剖面图。9(A) is a perspective view of the runner of the resin molded product according to the second embodiment of the present invention, and FIG. 9(B) is a cross-sectional view of the runner of the resin molded product according to the second embodiment of the present invention.

图10的(A)是图9的树脂成型品的浇道的立体图，图10的(B)是图9的树脂成型品的浇道的剖面图。FIG. 10(A) is a perspective view of the runner of the resin molded product of FIG. 9 , and FIG. 10(B) is a cross-sectional view of the runner of the resin molded product of FIG. 9 .

具体实施方式Detailed ways

以下，参照附图说明本发明的例示的实施方式。另外，在各图中，相同的附图标记表示相同的要素。而且，在各图中，将相对于纸面的上下左右方向作为本实施方式的装置的上下左右方向，在本说明书中进行说明时使用。另外本发明在以下说明的实施方式中作为成形素材例示了不同颜色的树脂材料，但并不限定于此，例如，也能够应用不同材质(聚苯乙烯、聚乙烯、ABS等热塑性树脂、热固化性树脂、金属等)、不同透明度的树脂等成形素材。Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in each figure, the same reference numerals denote the same elements. In addition, in each figure, the up-down, left-right direction with respect to the paper surface is used as the up-down, left-right direction of the apparatus of this embodiment, and it is used for description in this specification. In addition, in the embodiments described below, the present invention exemplifies resin materials of different colors as molding materials, but it is not limited to this. For example, different materials (thermoplastic resins such as polystyrene, polyethylene, ABS, thermosetting resin, metal, etc.), resins with different transparency and other molding materials.

＜第一实施方式＞附图标记1是成形装置，包含未图示的公知的注塑装置，成形装置包括：安装于注塑装置的移动侧的移动模具主体2以及安装于注塑装置的固定侧的固定模具主体3。图1是使移动模具主体2接合于固定模具主体3而成的成形装置1的整体的剖面图。<First Embodiment> Reference numeral 1 denotes a molding apparatus, including a known injection molding apparatus not shown, and the molding apparatus includes a movable mold body 2 attached to the movable side of the injection molding apparatus, and a fixed side attached to the injection molding apparatus. Mold body 3. FIG. 1 is a cross-sectional view of the entire molding apparatus 1 in which a movable mold main body 2 is joined to a fixed mold main body 3 .

移动模具主体2包括：阳模安装板6，其安装阳模(移动侧模具)5；固定台7，其固定阳模安装板6；移动侧安装板9，其安装于注塑装置；以及间隔件10，其设于固定台7和移动侧安装板9之间的两侧。附图标记11、12是连结注塑喷嘴的凹部，该注塑喷嘴用于将不同颜色的成形树脂素材经由浇道槽15、16向形成在阳模5与后述阴模51之间的成形模具18内注塑。The moving mold body 2 includes: a male mold mounting plate 6 that mounts a male mold (moving side mold) 5; a fixed table 7 that fixes the male mold mounting plate 6; a moving side mounting plate 9 that is mounted on the injection molding device; and spacers 10, which are arranged on both sides between the fixed table 7 and the moving side mounting plate 9. Reference numerals 11 and 12 are concave portions for connecting injection nozzles for transferring molding resin materials of different colors to a molding die 18 formed between a male mold 5 and a female mold 51 to be described later via runner grooves 15 and 16 . Internal injection.

在固定台7形成有空室19，推出板20移动自如地设于该空室19内。在该推出板20嵌设有多个推出销21…。各推出销21…构成为贯穿阳模安装板6、阳模5等，且其顶端在成形模具18内、浇道槽15、16内出没，从而推出像后述那样在成形模具18内成形的多色成形物24、在浇道槽15、16内成形的多色浇道R。推出板20固定于按压轴25，该按压轴25插通于在固定台7的大致中央形成的孔22以及在移动侧安装板9的大致中央形成的孔23。An empty chamber 19 is formed in the fixing table 7 , and the push-out plate 20 is movably provided in the empty chamber 19 . A plurality of ejection pins 21 . . . are embedded in the ejection plate 20 . Each ejector pin 21... The multi-color molded product 24 and the multi-color runner R formed in the runner grooves 15 and 16. The push-out plate 20 is fixed to a pressing shaft 25 inserted through a hole 22 formed in the approximate center of the fixed table 7 and a hole 23 formed in the approximate center of the moving-side mounting plate 9 .

在固定台7形成有固定模具主体3侧开放的安装孔29，分隔构件30的后部滑动自如地设于该安装孔29内。在该安装孔29内设有螺旋弹簧31a、31b，螺旋弹簧31a、31b将分隔构件30a、30b的后端向固定模具主体3侧施力。另外，也可以是，在分隔构件30a的后部形成凸缘32，使该凸缘32卡定于在安装孔29形成的台阶部33，从而限制分隔构件30a的移动范围。分隔构件30a以其顶端在浇道槽16内至少将浇道槽16分隔为两部分的方式与后述阴模(固定侧模具)51压接、分隔构件30b以其顶端在成形模具18内至少将成形模具18分隔为两部分的方式与后述阴模(固定侧模具)51压接。A mounting hole 29 that is open on the side of the stationary mold body 3 is formed in the fixing table 7 , and the rear portion of the partition member 30 is slidably provided in the mounting hole 29 . Coil springs 31 a and 31 b are provided in the mounting holes 29 , and the coil springs 31 a and 31 b urge the rear ends of the partition members 30 a and 30 b toward the stationary mold body 3 . In addition, a flange 32 may be formed on the rear portion of the partition member 30a, and the flange 32 may be engaged with the stepped portion 33 formed in the attachment hole 29, thereby restricting the movement range of the partition member 30a. The spacer member 30a is crimped to a female mold (fixed side mold) 51 to be described later so that the top end of the spacer member 30a divides the runner groove 16 into at least two parts. The forming die 18 is press-contacted to a female die (fixed-side die) 51 to be described later so as to be divided into two.

固定模具主体3包括：固定侧安装板50，其安装于未图示的注塑装置；阴模安装板52，其安装有阴模51；以及间隔件53，其在固定侧安装板50与阴模安装板52之间且设于两侧。附图标记55是形成于固定侧安装板50的注塑喷嘴连结凹部。安装于该连结凹部55的注塑喷嘴的顶端连接于形成在阴模安装板52以及阴模51的直浇口56。该直浇口56形成为连通于浇道槽15、16。The fixed mold body 3 includes: a fixed side mounting plate 50, which is mounted on an injection molding device (not shown); a female mold mounting plate 52, on which the female mold 51 is mounted; and a spacer 53, which is mounted on the fixed side between the mounting plate 50 and the female mold. The mounting plates 52 are arranged between and on both sides. Reference numeral 55 is an injection nozzle connection recess formed in the fixed-side mounting plate 50 . The tip of the injection nozzle attached to the connection recess 55 is connected to the sprue 56 formed in the female mold mounting plate 52 and the female mold 51 . The sprue 56 is formed so as to communicate with the runner grooves 15 and 16 .

＜分隔构件30a＞参照图1以及图2详细描述分隔构件30a。分隔构件30a以能够相对于浇道槽16内出入从而在浇道槽16内进行分隔的方式设于移动模具主体2(或者固定模具主体3)。该分隔构件30a在弹性构件31a的作用下朝向向浇道槽16内探出的方向被施力。<Partition member 30a> The partition member 30a will be described in detail with reference to FIGS. 1 and 2 . The partition member 30a is provided in the movable mold main body 2 (or the fixed mold main body 3) so as to be able to move in and out of the sprue groove 16 to partition the inside of the runner groove 16 . The partition member 30a is urged in a direction protruding into the runner groove 16 by the elastic member 31a.

如图2所示，将浇道槽16分隔的分隔构件30a的截面形状并不特别限定，在本实施例中形成为圆轴状。若为圆轴状，则容纳分隔构件30a的模具的加工较容易，且能够通过对以往使用的突出销进行加工来制作分隔构件30a。另外，分隔构件30a不限于圆轴状，也可以形成为棱柱状。As shown in FIG. 2, the cross-sectional shape of the partition member 30a which partitions the runner groove 16 is not particularly limited, but is formed in the shape of a circular axis in this embodiment. If it is a circular shaft shape, it becomes easy to process the metal mold|die which accommodates the partition member 30a, and can manufacture the partition member 30a by processing the protrusion pin used conventionally. In addition, the partition member 30a is not limited to a circular shaft shape, and may be formed in a prismatic shape.

在分隔构件30a的顶部形成有小径部35，该小径部35的顶端被螺旋弹簧31a施力，朝向浇道槽16内突出而按压于阴模51。该小径部35的一侧的面(图2中进深侧的面、限制面)36与在后述的浇道槽16内流动的成形树脂素材的流动方向呈大致直角。此外，在另一侧的面(图2中跟前侧的面)37形成有开放至分隔构件30a的上端面39的台阶凹部40。A small-diameter portion 35 is formed at the top of the partition member 30a, and the tip of the small-diameter portion 35 is biased by the coil spring 31a, protrudes into the runner groove 16, and is pressed against the female mold 51. The surface (the surface on the back side in FIG. 2 , the restriction surface) 36 on one side of the small diameter portion 35 is substantially at right angles to the flow direction of the molding resin material flowing in the runner groove 16 described later. Moreover, the stepped recessed part 40 which opens up to the upper end surface 39 of the partition member 30a is formed in the other surface (the surface on the front side in FIG. 2) 37.

台阶凹部40的形状并不特别限定。例如，图2所示的台阶凹部40具有：凹部40a，其形成在剖面圆形状的上端面的中央形成的半球状的凹陷；以及缺口部40b，其自该半球状的凹部朝向另一侧的面37侧切除而成。The shape of the stepped recess 40 is not particularly limited. For example, the stepped concave portion 40 shown in FIG. 2 has a concave portion 40a formed as a hemispherical depression formed in the center of the upper end surface of a circular cross-sectional shape, and a notch portion 40b directed from the hemispherical concave portion toward the other side. The 37 side is cut off.

在图3的(A)表示将分隔构件30a容纳于浇道槽16的状态的阳模5的立体图。另外，在浇道槽16以隔着分隔构件30a的方式配置有一对节流销16a。节流销16a抑制流过来的树脂的势头，防止树脂越过分隔构件30a向相反侧流入。在浇道槽16配置有突起部16b，该突起部16b与分隔构件30a邻接，向分隔构件30a的一侧的面(限制面)36侧的浇道槽16内突出，该突起部16b用于在后述的浇道R形成具有覆盖分隔构件30a的一部分的壁部17a1的凹形状部17a。在图3的(B)表示在阳模5的浇道槽16容纳的分隔构件30a位于退避位置的状态。图3的(C)表示分隔构件30a的放大立体图。另外，图3的(A)、图3的(B)、图3的(C)表示树脂未填充在浇道槽16内的状态。FIG. 3(A) shows a perspective view of the male mold 5 in a state where the partition member 30 a is accommodated in the runner groove 16 . In addition, a pair of throttle pins 16a are arranged in the runner groove 16 so as to sandwich the partition member 30a. The throttle pin 16a suppresses the force of the flowing resin, and prevents the resin from flowing into the opposite side beyond the partition member 30a. The runner groove 16 is provided with a protruding portion 16b which is adjacent to the partition member 30a and protrudes into the runner groove 16 on the side (restriction surface) 36 of one side of the partition member 30a. The protruding portion 16b is used for The concave-shaped part 17a which has the wall part 17a1 which covers a part of the partition member 30a is formed in the runner R mentioned later. FIG. 3(B) shows a state in which the partition member 30a accommodated in the runner groove 16 of the male mold 5 is located at the retracted position. (C) of FIG. 3 shows the enlarged perspective view of the partition member 30a. In addition, FIG. 3(A), FIG. 3(B), and FIG. 3(C) show the state in which resin is not filled in the runner groove|channel 16. In addition, FIG.

＜浇道R＞参照图4以及图5，说明本实施方式的浇道R。图4的(A)、图5的(A)是构成本发明的第一实施方式的树脂成型品的一部分的浇道R的立体图。图4的(B)是图4的(A)的IV-IV剖面图。图5的(B)是图5的(A)的V-V剖面图。如图4的(A)所示，浇道R具有由第1树脂A形成的第1浇道部A1、由第2树脂B形成的第2浇道部B1、以及第1树脂A和第2树脂B合流而成的联合部17。因而，浇道R形成由多种树脂成形的树脂成形品的一部分。第1浇道部A1以及第2浇道部B1隔着联合部17配置在彼此的相反侧，分别具有由节流销16a形成的开口A2以及开口B2。<Runner R> Referring to FIGS. 4 and 5 , the runner R of the present embodiment will be described. FIG. 4(A) and FIG. 5(A) are perspective views of the runner R constituting a part of the resin molded product according to the first embodiment of the present invention. FIG. 4(B) is an IV-IV cross-sectional view of FIG. 4(A) . FIG. 5(B) is a V-V cross-sectional view of FIG. 5(A) . As shown in FIG. 4(A) , the runner R has a first runner portion A1 formed of the first resin A, a second runner portion B1 formed of the second resin B, and the first resin A and the second runner portion B1. The joint portion 17 formed by the merging of the resins B. Therefore, the runner R forms a part of a resin molded product molded from a plurality of resins. The 1st runner part A1 and the 2nd runner part B1 are arrange|positioned on the mutually opposite side via the joint part 17, and respectively have the opening A2 and the opening B2 formed by the throttle pin 16a.

联合部17具有：第1联合部17a，其由第1树脂A成形；以及第2联合部17b，其由第2树脂B成形。第2联合部17b通过后述的分隔构件30a的退避而成形在浇道槽16内，第2联合部17b具有：底部，其是通过将分隔构件30a的台阶凹部40的形状转印而成的；以及圆筒部，其具有与分隔构件30a的小径部35相同的直径。The joint portion 17 includes a first joint portion 17a formed of the first resin A, and a second joint portion 17b formed of the second resin B. The second joint portion 17b is formed in the sprue groove 16 by the retraction of the partition member 30a described later, and the second joint portion 17b has a bottom portion formed by transferring the shape of the stepped concave portion 40 of the partition member 30a. ; and a cylindrical portion having the same diameter as the small diameter portion 35 of the partition member 30a.

另一方面，第1联合部17a形成为具有底部(深部)17a2和与第2联合部17b的圆筒部的侧面的一部分接触的壁部17a1的凹形状。即，凹形状由底部17a2和在底部17a2的周围竖立设置的壁部17a1构成。但是，作为凹形状不限于上述的记载，例如代替由底部17a2和侧壁17a1划分出的空间，如上述台阶凹部40的凹部40a那样，也可以采用半球状的凹陷。即也可以设为不具有底部的凹形状。通过如此，能够将后述的突起部16b的形状设为简单的形状。On the other hand, the first joint portion 17a is formed in a concave shape having a bottom portion (deep portion) 17a2 and a wall portion 17a1 in contact with a part of the side surface of the cylindrical portion of the second joint portion 17b. That is, the concave shape is constituted by the bottom portion 17a2 and the wall portion 17a1 erected around the bottom portion 17a2. However, the concave shape is not limited to the above description. For example, instead of the space defined by the bottom portion 17a2 and the side wall 17a1, a hemispherical concave like the concave portion 40a of the stepped concave portion 40 may be used. That is, a concave shape without a bottom may be used. By doing so, the shape of the protrusion part 16b mentioned later can be made into a simple shape.

另外，在本实施方式中，底部17a2是自矩形的一边将第2联合部17b的剖面形状即圆弧切除掉而成的形状。并且，以竖立设置于底部17a2的圆弧状部分的、壁部17a1的一部分覆盖第2联合部17b的侧面的方式配置。而且，壁部17a1的内周面沿着第2联合部17b的一部分形成。通过如此，能够利用薄壁的壁部17a1的一部分覆盖第2联合部17b的侧面，能够以较少的树脂的容积有效地使第1联合部17a与第2联合部17b之间的结合力变牢固(参照图4的(B))。In addition, in the present embodiment, the bottom portion 17a2 is a shape obtained by cutting out an arc, which is a cross-sectional shape of the second joint portion 17b, from one side of a rectangle. And it arrange|positions so that the side surface of the 2nd joint part 17b may be covered by a part of the wall part 17a1 standingly provided in the arc-shaped part of the bottom part 17a2. And the inner peripheral surface of the wall part 17a1 is formed along a part of the 2nd joint part 17b. By doing so, the side surface of the second joint portion 17b can be covered with a part of the thin wall portion 17a1, and the bonding force between the first joint portion 17a and the second joint portion 17b can be effectively changed with a small volume of resin. firm (refer to FIG. 4(B) ).

另一方面，例如，在将第2联合部17b设为剖面矩形状的棱柱的情况下，第1联合部17a的壁部17a1也能够设为与第2联合部17b的棱柱的一侧面接触的局部直线状的壁部17a1。即，作为壁部17a1，不限于例如弯曲形状，也可以由直线状构成。On the other hand, for example, when the second joint portion 17b is a prism having a rectangular cross-section, the wall portion 17a1 of the first joint portion 17a can also be formed to be in contact with one side surface of the prism of the second joint portion 17b. Partially linear wall portion 17a1. That is, the wall portion 17a1 is not limited to, for example, a curved shape, and may be formed in a linear shape.

参照图5的(B)所示的剖面图，说明第1联合部17a的详细情况。在将剖面圆形的第2浇道部B1(第1浇道部A1也同样)的直径设为R1的情况下，将第1联合部17a的厚度设为t1。此时厚度t1设定为小于直径R1。例如在作为R1设为约3.0mm的情况下，作为厚度t1也可以设为约1.5mm。即，第1联合部17a形成为比第1浇道部A1或者第2浇道部B1薄。Details of the first joint portion 17a will be described with reference to the cross-sectional view shown in FIG. 5(B) . When the diameter of the second runner portion B1 having a circular cross section (the same applies to the first runner portion A1) is defined as R1, the thickness of the first joint portion 17a is defined as t1. At this time, the thickness t1 is set to be smaller than the diameter R1. For example, when R1 is about 3.0 mm, the thickness t1 may be about 1.5 mm. That is, the 1st joint part 17a is formed thinner than the 1st runner part A1 or the 2nd runner part B1.

并且，关于图5的(B)中至少左右方向的壁部17a1，其内周面17a1a的至少一部是随着自凹形状的底部17a2朝向壁部17a1的顶部以倾斜角度θ1向凹形状的外侧倾斜的倾斜面。而且，壁部17a1的外周面17a1b的至少一部是随着朝向壁部17a1的顶部以倾斜角度θ2向凹形状的内侧倾斜的倾斜面。另外作为倾斜角度θ1、θ2，能够例示约5度。5(B), at least a part of the inner peripheral surface 17a1a of the wall portion 17a1 in the left-right direction is inclined toward the concave shape at an inclination angle θ1 from the bottom portion 17a2 of the concave shape toward the top of the wall portion 17a1. The sloped surface that slopes on the outside. Moreover, at least a part of the outer peripheral surface 17a1b of the wall part 17a1 is an inclined surface which inclines toward the inner side of the concave shape at an inclination angle θ2 toward the top of the wall part 17a1. In addition, about 5 degrees can be illustrated as the inclination angles θ1 and θ2.

壁部17a1构成为随着自底部17a2朝向壁部17a1的顶部，其水平方向的剖面面积逐渐减少。即，通过将壁部17a1的内周面、外周面设为倾斜面，在将浇道R自模具拔出时，能够使作用于第1联合部17a的力降低，能够防止在第1联合部17a与第2联合部17b之间的紧固部位作用多余的力。因此，在将浇道R自模具拔出时，能够防止第1联合部17a和第2联合部17b的结合被解除、被分离。而且，通过抑制在自模具拔出时在第1联合部17a与第2联合部17b之间的紧固部位作用多余的力，能够抑制在完成成形的时刻第1联合部17a和第2联合部17b的结合已经变弱这样的情况。因此，即使在将本实施方式的树脂成型品应用于塑料模型成套元件的塑料模型的部件和支承该塑料模型的部件的浇道的情况下，在将塑料模型成套元件放入商品包装箱并进行搬运的途中，也能够抑制由于振动、冲击所引起的第1联合部17a和第2联合部17b的结合被解除这样的事态。The wall part 17a1 is comprised so that the cross-sectional area in the horizontal direction may gradually decrease from the bottom part 17a2 toward the top part of the wall part 17a1. That is, by setting the inner peripheral surface and the outer peripheral surface of the wall portion 17a1 to be inclined surfaces, the force acting on the first joint portion 17a can be reduced when the runner R is pulled out of the mold, and the first joint portion can be prevented from An excess force acts on the fastening portion between 17a and the second joint portion 17b. Therefore, when the runner R is pulled out from the mold, it is possible to prevent the coupling of the first coupling portion 17a and the second coupling portion 17b from being released and separated. Furthermore, it is possible to suppress the first joint portion 17a and the second joint portion at the time of completion of molding by suppressing the excessive force acting on the fastening portion between the first joint portion 17a and the second joint portion 17b at the time of extraction from the mold. The binding of 17b has weakened such a case. Therefore, even when the resin molded product of the present embodiment is applied to the part of the plastic mold of the plastic mold kit and the runner supporting the part of the plastic mold, the plastic mold kit is put into the commodity packing box and the It is also possible to suppress a situation in which the coupling of the first joint portion 17a and the second joint portion 17b is released due to vibration and shock during transportation.

此外，在本实施方式中，构成第1联合部17a的壁部17a1以及底部17a2分别由薄壁的构件形成，因此，在自模具拔出上述浇道R时，能够进一步降低作用于第1联合部17a的力，并且能够使后述的第1联合部17a的固化提前。例如在使上述第1联合部17a的厚度t1为约1.5mm的情况下，能够将底部17a2的厚度设为大约0.5mm。In addition, in the present embodiment, since the wall portion 17a1 and the bottom portion 17a2 constituting the first joint portion 17a are each formed of thin-walled members, it is possible to further reduce the effect on the first joint when the runner R is pulled out from the mold. The force of the part 17a can be accelerated, and the curing of the first joint part 17a to be described later can be accelerated. For example, when the thickness t1 of the first joint portion 17a is about 1.5 mm, the thickness of the bottom portion 17a2 can be about 0.5 mm.

而且，第1联合部17a相对于邻接的第1浇道部A1的、与第1联合部17a相同的长度的容积，以较小的容积成形。具体而言，参照图5的(A)，将第1联合部17a的轴向长度设为d1，将第1浇道部A1的与第1联合部17a相同的轴向长度设为d2。d1和d2为相同的长度。此时，设定为第1联合部17a的长度d1的容积比第1浇道部A1的长度d2的容积小。另外，以往，相当于第1联合部的部位以例如约2.5mm的厚度由实心成形。And the 1st joint part 17a is formed with a smaller volume than the volume of the adjacent 1st runner part A1 which has the same length as the 1st joint part 17a. Specifically, referring to Fig. 5(A) , let the axial length of the first joint portion 17a be d1, and let the same axial length of the first runner portion A1 as the first joint portion 17a be d2. d1 and d2 are the same length. At this time, the volume of the length d1 of the 1st joint part 17a is set to be smaller than the volume of the length d2 of the 1st runner part A1. In addition, conventionally, the site|part corresponding to a 1st joint part is shape|molded by a solid, for example with a thickness of about 2.5 mm.

即，如上述那样，第1联合部17a设定为厚度比第1浇道部A1薄，并且由于设为由薄壁的壁部17a1和底部17a2构成的凹形状，因此与相同的长度的第1浇道部A1相比成为较小的容积。通过如此，相对于与第1联合部17a邻接的第1浇道部A1，将其容积缩小，并且扩大与模具的接触面积，由此，在后述的成形时能够提前进行第1联合部17a的固化。That is, as described above, the first joint portion 17a is set thinner than the first runner portion A1, and has a concave shape composed of the thin wall portion 17a1 and the bottom portion 17a2, so that the first joint portion 17a has the same length as the first runner portion A1. The volume of the runner portion A1 is smaller than that of the runner portion A1. In this way, the volume of the first runner portion A1 adjacent to the first joint portion 17a is reduced, and the contact area with the mold is enlarged, thereby enabling the first joint portion 17a to be formed earlier at the time of molding, which will be described later. of curing.

＜成形工序＞参照图6的(A)以及图6的(B)，说明第一实施方式的浇道R的成型工序。图6的(A)以及图6的(B)所示的剖面图是由例如图3的(A)的VI-VI线切断模具而呈的剖面图。首先，当如图1所示那样使阳模5以及阴模51闭模时，未图示的注塑装置与模具连接，自例如连结注塑喷嘴的凹部11向成形空间18以及浇道槽16注塑自浇道槽的一侧流过来的第1树脂A(第1注塑工序)。接着无需等待第1树脂A的注塑完成，注塑装置自例如连结注塑喷嘴的凹部12向模具注塑自浇道槽16的另一侧流过来的第2树脂B(第2注塑工序)。<Molding process> The molding process of the runner R of 1st Embodiment is demonstrated with reference to FIG.6(A) and FIG.6(B). The cross-sectional views shown in FIG. 6(A) and FIG. 6(B) are cross-sectional views obtained by cutting the mold along the line VI-VI of FIG. 3(A) , for example. First, when the male mold 5 and the female mold 51 are closed as shown in FIG. 1 , an injection molding apparatus (not shown) is connected to the mold, and injection molding is performed from, for example, the concave portion 11 connecting the injection nozzle to the molding space 18 and the runner groove 16 . The 1st resin A (1st injection|molding process) which flows from one side of a runner groove. Next, without waiting for the completion of the injection of the first resin A, the injection apparatus injects the second resin B flowing from the other side of the runner groove 16 into the mold from, for example, the concave portion 12 connecting the injection nozzles (second injection step).

在第1注塑工序中，如图6的(A)所示，第1树脂A自图中左侧向图中右侧流动，在浇道槽16内的、分隔构件30a的一侧的面(限制面)36侧即配置有突起部16b的空间填充有第1树脂A。此时分隔构件30a的限制面侧限制自浇道槽16的一侧(图中左侧)流过来的第1树脂A的流动(限制工序)。即，分隔构件30a的一侧的面36与成形树脂素材的流入方向成大致直角，能够阻止流动至该一侧的面36侧的成形树脂素材的流动。并且，第1树脂A在分隔构件30a的一侧的面36被堵住，停止流动。In the first injection step, as shown in FIG. 6(A) , the first resin A flows from the left side in the figure to the right side in the figure, and the surface ( The space where the protrusions 16b are arranged on the side of the restriction surface) 36 is filled with the first resin A. At this time, the restriction surface side of the partition member 30a restricts the flow of the first resin A flowing from one side (the left side in the figure) of the runner groove 16 (restriction step). That is, the surface 36 on one side of the partition member 30a forms a substantially right angle with the inflow direction of the molded resin material, and the flow of the molded resin material flowing to the side of the one side surface 36 can be prevented. Then, the first resin A is blocked on the surface 36 on one side of the partition member 30a, and the flow thereof is stopped.

此时第1树脂A在一侧的面(限制面)36侧的浇道槽16内成形凹形状的第1联合部(凹形状部)17a(第1成形工序)，该第1联合部17a具有底部17a2以及包围分隔构件30a的一部分的壁部17a1。在此，参照图3的(A)以及图3的(C)，浇道槽16内的突起部16b具有：第1侧面16b1，其与浇道槽16的面16d相对；以及第2侧面16b2，其与分隔构件30a的一侧的面离开规定距离且沿着分隔构件30a的一部分延伸。如图3的(C)所示那样，第2侧面16b2与分隔构件30a的一侧的面离开规定距离d的量。另外，如上述那样，由于第1联合部17a的壁部17a1具有倾斜面，因此，至少突起部16b的第1侧面16b1以及浇道槽16的面16d形成为倾斜面。At this time, the first resin A forms a concave first joint portion (concave portion) 17a in the runner groove 16 on the side of one surface (restriction surface) 36 (first molding step), and the first joint portion 17a is formed. It has the bottom part 17a2 and the wall part 17a1 which surrounds a part of the partition member 30a. 3 (A) and FIG. 3 (C), the protrusion 16b in the runner groove 16 has: a first side surface 16b1 facing the surface 16d of the runner groove 16; and a second side surface 16b2 , which is a predetermined distance away from one side surface of the partition member 30a and extends along a part of the partition member 30a. As shown in FIG. 3(C) , the second side surface 16b2 is separated from the surface on one side of the partition member 30a by a predetermined distance d. Moreover, since the wall part 17a1 of the 1st joint part 17a has an inclined surface as mentioned above, at least the 1st side surface 16b1 of the protrusion part 16b and the surface 16d of the runner groove 16 are formed as inclined surfaces.

如上述那样，凹形状的第1联合部17a由薄壁的壁部17a1以及底部17a2形成，并且由于将其容积设定得较小因此会提前固化。即，第1联合部17a利用浇道槽16的突起部16b而具有薄壁的底部17a2和包围其周围的薄壁的壁部17a1，因此，扩大与模具的接触面积且提前固化。As described above, the first joint portion 17a of the concave shape is formed by the thin wall portion 17a1 and the bottom portion 17a2, and the volume thereof is set to be small, so that it solidifies early. That is, the first joint portion 17a has a thin bottom portion 17a2 and a thin wall portion 17a1 surrounding the protruding portion 16b of the runner groove 16, thereby expanding the contact area with the mold and curing early.

例如，在未形成有突起部16b的浇道槽16中，在相当于第1联合部的部位形成有不具有凹形状的实心的浇道。若如此，则需要规定时间直到实心的浇道内部冷却，与本实施方式那样的凹形状的第1联合部17a相比较，会花费直到固化为止的规定的时间。因此，与以往相比，由第1树脂A成形的凹形状的第1联合部17a会迅速地固化(固化工序)。For example, in the runner groove 16 in which the protrusion part 16b is not formed, the solid runner which does not have a concave shape is formed in the site|part corresponding to a 1st joint part. In this case, it takes a predetermined time until the inside of the solid runner cools, and it takes a predetermined time until solidification compared with the concave first joint portion 17a of the present embodiment. Therefore, the concave first joint portion 17a molded from the first resin A is cured more rapidly than in the past (curing step).

接着，如图6的(B)所示，通过与连结凹部55连结的注塑喷嘴将例如不同颜色的第2树脂B向浇道槽16注塑。当第2树脂B自浇道槽16的另一侧(自图中右侧向左侧)流入时，第2树脂B暂时被分隔构件30a的小径部35的另一侧的面37堵住，然后流入台阶凹部40。通过该第2树脂B的流动压力，台阶凹部40的半球状凹部40a被朝向箭头A方向按压，分隔构件30a克服弹性构件31a的作用力地被推压。在图3的(B)中示出此时的状态。因此，分隔构件30a通过自浇道槽16的另一侧流过来的第2树脂B的流动自浇道槽16退避(退避工序)。像这样，第2树脂B成形与在第1成形工序中形成的凹形状部接合的接合部(第2形成工序)。Next, as shown in FIG. 6(B) , the second resin B of, for example, a different color is injected into the runner groove 16 through the injection nozzle connected to the connection recess 55 . When the second resin B flows in from the other side of the runner groove 16 (from the right side to the left side in the figure), the second resin B is temporarily blocked by the surface 37 on the other side of the small diameter portion 35 of the partition member 30a, Then it flows into the stepped recess 40 . The hemispherical concave portion 40a of the stepped concave portion 40 is pressed in the arrow A direction by the flow pressure of the second resin B, and the partition member 30a is pressed against the urging force of the elastic member 31a. The state at this time is shown in FIG.3(B). Therefore, the partition member 30a is evacuated from the runner groove 16 by the flow of the second resin B flowing from the other side of the runner groove 16 (evacuation step). In this way, the second resin B molds the joint portion to be joined to the concave portion formed in the first molding step (second forming step).

即，在第2树脂B到达分隔构件30a时，由于第1联合部17a的固化正在完成，因此，在第1注塑部注塑第1树脂A后，无需等待第1树脂A的注塑完成，第2注塑部就能够注塑第2树脂B。因此，能够提供成形所需时间缩短的树脂成型品。That is, when the second resin B reaches the partition member 30a, the curing of the first joint portion 17a is being completed. Therefore, after the injection of the first resin A at the first injection portion, there is no need to wait for the injection of the first resin A to be completed. The injection part can inject the second resin B. Therefore, it is possible to provide a resin molded product in which the time required for molding is shortened.

另外，第2树脂B到达分隔构件30a的时机能够根据自模具的浇口到本发明的分隔构件30a以及突起部16b为止的位置而适当地改变，但通过使至少相当于第1联合部17a的部位的固化比以往提前，能够缩短注塑成型循环，并且还提高模具设计(设计)的自由度。作为成型循环，以相同的模具的设计，比较适用本发明的构件和以往的构件，能够缩短例如3秒。In addition, the timing at which the second resin B reaches the partition member 30a can be appropriately changed depending on the position from the gate of the mold to the partition member 30a and the projection portion 16b of the present invention. Parts are cured earlier than in the past, and the injection molding cycle can be shortened, and the degree of freedom of mold design (design) can also be improved. As a molding cycle, it is possible to shorten, for example, 3 seconds by comparing the member of the present invention and the conventional member with the same mold design.

如此成形的浇道R如图4所示那样，在由第1联合部17a的壁部17a1的一部分形成的曲面部嵌有与分隔构件30a的形状对应的圆筒状的第二联合部17b。即，第1联合部17a形成半包围第二联合部17b的小径部的成形凹部，成为利用该成形凹部包持第二联合部17b的形状，使得由第1树脂A形成的第1联合部17a与由第2树脂B形成的第2联合部17b之间的熔接变得牢固。因此，即使在将本实施方式的树脂成型品适用于塑料模型成套元件的塑料模型的部件和支承该塑料模型的部件的浇道的情况下，在将塑料模型成套元件放入商品包装箱并进行搬运的途中，也能够抑制由于振动、冲击所引起的第1联合部17a和第2联合部17b的熔接被解除这样的事态。As shown in FIG. 4 , the runner R thus formed is fitted with a cylindrical second joint portion 17b corresponding to the shape of the partition member 30a in a curved surface portion formed by a part of the wall portion 17a1 of the first joint portion 17a. That is, the first joint portion 17a is formed into a molding recessed portion that half surrounds the small diameter portion of the second joint portion 17b, and the second joint portion 17b is surrounded by the molding recessed portion, so that the first joint portion 17a formed of the first resin A is formed. Welding with the second joint portion 17b formed of the second resin B becomes firm. Therefore, even when the resin molded product of the present embodiment is applied to the part of the plastic mold of the plastic mold kit and the runner supporting the part of the plastic mold, the plastic mold kit is put into the product packaging box and the Also in the middle of transportation, it is possible to suppress a situation in which the welding of the first joint portion 17a and the second joint portion 17b is released due to vibration and impact.

之后，当将图1所示的移动模具主体2自固定模具主体3分离，按压按压轴25从而使推出板20移动时，设于推出板20的推出销21…将附着于移动模具主体2的阳模5的多色浇道R以及多色成形物推出，从而能够将多色浇道R以及多色成形物取出。在上述实施例中，将分隔构件30以及突起部16b设于移动模具主体2侧，但也可以设于固定模具主体3侧。而且，作为对分隔构件30施力的弹性构件使用了螺旋弹簧31，但是也可以利用橡胶、板簧等其他具有弹性的零件。After that, when the movable mold main body 2 shown in FIG. 1 is separated from the fixed mold main body 3 and the pressing shaft 25 is pressed to move the ejector plate 20 , the ejector pins 21 provided on the ejector plate 20 will be attached to the movable mold main body 2 . The multi-color runner R and the multi-color molded product of the male mold 5 are pushed out, so that the multi-color runner R and the multi-color molded product can be taken out. In the above-described embodiment, the partition member 30 and the protruding portion 16 b are provided on the side of the movable mold body 2 , but may be provided on the side of the stationary mold body 3 . Moreover, although the coil spring 31 is used as the elastic member which urges the partition member 30, other elastic parts, such as rubber and a leaf spring, may be used.

＜第二实施方式＞在图7以及图8中例示了如下形态：分隔构件100以在浇道槽85内隔着突起部127的方式成对配置，各个分隔构件100的限制面106与突起部127相对地配置。与第一实施方式的不同点在于，分隔构件100成对设置，其他结构与第一实施方式相同。<Second Embodiment> FIGS. 7 and 8 illustrate an embodiment in which the partition members 100 are arranged in pairs with the protrusions 127 interposed therebetween in the runner grooves 85, and the restriction surfaces 106 and the protrusions of the respective partition members 100 are arranged in pairs. 127 are configured relatively. The difference from the first embodiment is that the partition members 100 are provided in pairs, and other structures are the same as those of the first embodiment.

分隔构件100与图2所示的分隔构件30a同样地形成为圆轴状，在顶端形成有台阶凹部110，在下端设有凸缘102。该分隔构件100设为后部在形成于前部推出板90的轴孔99滑动自如。分隔构件100的凸缘102滑动自如地安装在前部推出板90的滑动孔96，通过设于后部推出板91的弹簧座孔104的弹簧101，凸缘102向浇道槽85所在的方向被施力，从而卡定于滑动孔96的上壁103。The partition member 100 is formed in a circular shaft shape similarly to the partition member 30a shown in FIG. 2 , and has a stepped concave portion 110 formed at its tip and a flange 102 at its lower end. The rear part of the partition member 100 is slidable in the shaft hole 99 formed in the front part push-out plate 90 . The flange 102 of the partition member 100 is slidably attached to the sliding hole 96 of the front push-out plate 90 , and the flange 102 is oriented in the direction of the runner groove 85 through the spring 101 provided in the spring seat hole 104 of the rear push-out plate 91 . It is forced to be locked to the upper wall 103 of the sliding hole 96 .

此外，凸缘102克服弹簧101的弹性被按下直到抵接于形成在弹簧座孔104的上部的台阶部117。并且，在滑动孔96的一侧形成有卡定槽116，设于凸缘102的卡定轴115滑动自如地卡定于该卡定槽116。因此，分隔构件100不会旋转。Further, the flange 102 is pressed against the elasticity of the spring 101 until it abuts against the stepped portion 117 formed at the upper portion of the spring seat hole 104 . In addition, a locking groove 116 is formed on one side of the sliding hole 96 , and the locking shaft 115 provided in the flange 102 is slidably locked in the locking groove 116 . Therefore, the partition member 100 does not rotate.

分隔构件100的顶端通过螺旋弹簧101的弹性被施力，向浇道槽85内突出，按压于阴模122。该分隔构件100的一侧的面106与在浇道槽85内流动的成形树脂素材的流动方向成大致直角。而且在另一侧的面107形成有开放至分隔构件100的上端面109的台阶凹部110。该分隔构件100两个一组，向各浇道槽85内突出。该两个分隔构件100、100以一侧的面106、106彼此相对的方式设置。The distal end of the partition member 100 is urged by the elasticity of the coil spring 101 , protrudes into the runner groove 85 , and is pressed against the female mold 122 . The surface 106 on one side of the partition member 100 forms a substantially right angle with the flow direction of the molding resin material flowing in the runner groove 85 . Furthermore, a stepped recess 110 that opens to the upper end surface 109 of the partition member 100 is formed on the other surface 107 . The partition members 100 are set in pairs and protrude into each runner groove 85 . The two partition members 100 and 100 are provided so that the surfaces 106 and 106 of one side face each other.

如图8的(A)所示，通过注塑装置，自浇道槽85的一侧(图中左侧)流入第1树脂A。该第1树脂A流入至形成在图中左侧的分隔构件100的另一侧的面107的台阶凹部110。利用该第1树脂A的流动压力来按压台阶凹部110的底面111，使图中左侧的分隔构件100克服弹性构件101的作用力地被推压。第1树脂A就这样在浇道槽85内流动，在下一个分隔构件100的一侧的面106被堵住，从而停止流动。此时，形成有凹形状的第1联合部217a。As shown in FIG. 8(A) , by the injection molding apparatus, the first resin A flows from one side of the runner groove 85 (the left side in the drawing). The first resin A flows into the stepped concave portion 110 formed on the other surface 107 of the partition member 100 on the left side in the figure. The bottom surface 111 of the stepped recess 110 is pressed by the flow pressure of the first resin A, and the partition member 100 on the left side in the figure is pressed against the urging force of the elastic member 101 . The first resin A flows in the sprue groove 85 as it is, and the surface 106 on the side of the next partition member 100 is blocked to stop the flow. At this time, a concave first joint portion 217a is formed.

如图8的(B)所示，当通过注塑装置自浇道槽85的另一侧(图中右侧)流入其他颜色的第2树脂B时，该第2树脂B流入至形成在图中右侧的分隔构件100的另一侧的面107的台阶凹部110。利用该第2树脂B的流动压力来按压台阶凹部110的底面111，使图中右侧的分隔构件100克服弹性构件101的作用力地被推压。其他颜色的第2树脂B流入图中右侧的分隔构件100曾经在的位置，与最初的第1树脂A熔接。像这样，在浇道槽85内成形有多色的浇道84。As shown in FIG. 8(B) , when the second resin B of another color flows from the other side (the right side in the figure) of the runner groove 85 by the injection molding apparatus, the second resin B flows into the injection molding apparatus formed in the figure. The stepped concave portion 110 of the other side surface 107 of the partition member 100 on the right side. The bottom surface 111 of the stepped concave portion 110 is pressed by the flow pressure of the second resin B, and the partition member 100 on the right side in the figure is pressed against the urging force of the elastic member 101 . The second resin B of the other color flows into the position where the partition member 100 on the right side in the figure was, and is welded to the first resin A first. In this way, multi-colored runners 84 are formed in the runner grooves 85 .

在图10的(A)以及图10的(B)中表示像以上那样形成的浇道84。图10的(A)以及图10的(B)所示的浇道84通过在其各构件的附图标记的开头标注2来表示与图5以及图6所示的浇道R相同的构件。另外，除了在浇道R和第1联合部217a形成有与分隔构件100对应的形状的部分200这一点不同以外，浇道84为相同的形状。The runner 84 formed as described above is shown in FIG. 10(A) and FIG. 10(B). The runner 84 shown in FIG.10(A) and FIG.10(B) shows the same member as the runner R shown in FIG.5 and FIG.6 by attaching 2 at the beginning of the code|symbol of each member. In addition, the runner 84 is the same shape except that the part 200 of the shape corresponding to the partition member 100 is formed in the runner R and the 1st joint part 217a.

在以上的第二实施方式中，例如由于在浇道槽85的突起部127的两侧配置分隔构件100，因此，无需调节各注塑喷嘴的注塑时机，例如能够同时地注塑。像这样，通过在一个浇道槽内成对地设置相对的分隔构件30，只要第1树脂A或者第2树脂B的任一者先到达突起部127即可提前该树脂的固化，因此，无需调节各注塑喷嘴的注塑时机，能够同时地注塑，能够进一步提高成形效率。In the above-described second embodiment, for example, since the partition members 100 are disposed on both sides of the protrusion 127 of the runner groove 85, it is not necessary to adjust the injection timing of each injection nozzle, for example, simultaneous injection can be performed. In this way, by providing the opposing partition members 30 in pairs in one runner groove, as long as either the first resin A or the second resin B reaches the protruding portion 127 first, the curing of the resin can be advanced. By adjusting the injection timing of each injection nozzle, injection can be performed at the same time, and the molding efficiency can be further improved.

如以上说明的那样，在本实施方式中，无需像以往的成形装置那样等待联合部分的固化，能够利用一个成形模具，以仅设置突起部的极其简单的机构缩短成形多色浇道或者多色成形物时的注塑时间。而且，由于能够使机构较为单纯、小型化且轻量化，因此，具有能够廉价地进行制造，即使安装于注塑装置，注塑装置的负担也较小这样的效果。而且无需按顺序注塑各色成形树脂素材来进行成形，也能够同时进行注塑成形，因此，能够使成形物的成形循环极短，提高生产效率，降低生产成本。As described above, in the present embodiment, it is not necessary to wait for the solidification of the joint portion as in the conventional molding apparatus, and it is possible to shorten the molding of a multi-color runner or a multi-colored runner with a single molding die with an extremely simple mechanism in which only the projections are provided. Injection time for molding. Furthermore, since the mechanism can be made relatively simple, compact and lightweight, it can be manufactured at low cost, and even if it is attached to the injection molding apparatus, there is an effect that the burden on the injection molding apparatus is small. In addition, it is not necessary to sequentially inject various colors of molding resin materials for molding, and injection molding can be performed simultaneously. Therefore, the molding cycle of the molded product can be extremely short, the production efficiency can be improved, and the production cost can be reduced.

而且，由于分隔构件的一侧的面的附近的联合部的第1树脂A的量较少，因此与以往的成形装置相比，使分隔构件的一侧的面的附近的第1树脂A提前固化。由此，与使用以往的成形装置的情况相比，能够更早地注塑第2树脂B，能够使成形效率提高，并且能够使模具设计的自由度提高。本发明例如能够适用于塑料模型成套元件等在成形品与浇道未分离的状态下流通的树脂成型品。Furthermore, since the amount of the first resin A in the joint portion in the vicinity of the one surface of the partition member is small, the first resin A in the vicinity of the one surface of the partition member is advanced earlier than that in the conventional molding apparatus. cured. As a result, the second resin B can be injected earlier than in the case of using a conventional molding apparatus, the molding efficiency can be improved, and the degree of freedom of the mold design can be improved. The present invention can be applied to, for example, a resin molded product such as a plastic mold kit, in which the molded product and the runner are not separated.

附图标记说明Description of reference numerals

17a、第1联合部；17a1、壁部；17b、第2联合部；A、第1树脂；B、第2树脂；84、R、浇道。17a, 1st joint; 17a1, wall; 17b, 2nd joint; A, 1st resin; B, 2nd resin; 84, R, runner.

Claims (32)

1. A resin molded article characterized in that,
the resin molded article is molded from a plurality of resins, and has a joint part where the 1 st resin and the 2 nd resin are joined together in a runner,
the joint portion has: a1 st joint part molded from the 1 st resin; and a2 nd joint part molded from the 2 nd resin,
the 1 st joint has a wall portion in contact with a portion of the 2 nd joint, and the 1 st joint is formed with a smaller volume with respect to a volume of a portion of an adjacent runner having the same length as the 1 st joint.
2. The resin molded article according to claim 1,
the wall portion covers the portion of the 2 nd joint portion.
3. The resin molded article according to claim 1 or 2,
the 1 st joint portion is formed in a concave shape,
at least a part of the inner circumferential surface of the wall portion is an inclined surface inclined outward of the concave shape from a deep portion of the concave shape toward a top portion of the wall portion.
4. The resin molded article according to claim 1 or 2,
an inner peripheral surface of the wall portion is formed along a part of the 2 nd joint portion.
5. The resin molded article according to claim 3,
an inner peripheral surface of the wall portion is formed along a part of the 2 nd joint portion.
6. The resin molded article according to claim 3,
at least a part of the outer peripheral surface of the wall portion is an inclined surface inclined inward of the concave shape toward the top of the wall portion.
7. The resin molded article according to claim 3,
the wall portion has: a contact surface that contacts a portion of the 2 nd joint; the surface opposite to the contact surface is a surface forming at least a part of the concave surface of the concave shape.
8. The resin molded article according to claim 6,
the wall portion has: a contact surface that contacts a portion of the 2 nd joint; the surface opposite to the contact surface is a surface forming at least a part of the concave surface of the concave shape.
9. A molding apparatus, characterized in that,
the forming device comprises: an injection device for injection molding a material; a plurality of molds that are clamped to each other to form a molding space for molding a molded article and a runner groove connected to the molding space; and a partition member provided in at least one of the molds, the partition member being capable of moving in and out of the runner groove to partition the runner groove,
the injection molding device is connected with the mold and used for injecting the molding material to the molding space and the runner groove,
the partition member has: a restricting surface that restricts a flow of the molding material flowing from one side of the runner groove; and a step recess portion which withdraws the partition member from the runner groove by a flow of the molding material from the other side of the runner groove,
the mold has a protrusion that protrudes toward the regulating surface side in the runner groove and forms a joint portion having a wall portion that contacts a part of the partition member in the runner,
the protrusion forms the volume of the joint with a smaller volume with respect to the volume of a portion of the runner adjacent to the joint, the portion having the same length as the joint.
10. The forming apparatus according to claim 9,
the united portion is formed in a concave shape,
the protrusion has an inclined surface for forming at least a part of an inner peripheral surface of the wall portion of the runner so as to be inclined outward of the concave shape from a deep portion of the concave shape toward a top portion of the wall portion.
11. The forming apparatus according to claim 9,
the protrusion has a side surface that is separated from the partition member by a predetermined distance and that is along a part of the partition member.
12. The forming apparatus according to claim 10,
the protrusion has a side surface that is separated from the partition member by a predetermined distance and that is along a part of the partition member.
13. The forming apparatus according to claim 10,
the runner groove has an inclined surface formed so that at least a part of an outer peripheral surface of the wall portion of the runner is inclined inward of the concave shape toward a top portion of the wall portion.
14. The forming apparatus according to claim 10,
the wall portion has: a contact surface which is in contact with another joint portion corresponding to a part of the partition member; the surface opposite to the contact surface is a surface forming at least a part of the concave surface of the concave shape.
15. The forming apparatus as claimed in claim 13,
the wall portion has: a contact surface which is in contact with another joint portion corresponding to a part of the partition member; the surface opposite to the contact surface is a surface forming at least a part of the concave surface of the concave shape.
16. The forming apparatus according to any one of claims 9 to 15,
the injection molding apparatus at least has: a1 st injection part for injecting the 1 st resin flowing from the one side of the runner groove; and a2 nd injection part for injecting the 2 nd resin flowing from the other side of the runner groove,
after the 1 st injection part finishes injecting the 1 st resin, the 2 nd injection part injects the 2 nd resin without waiting for the 1 st resin to be injected.
17. The forming apparatus according to any one of claims 9 to 15,
the mold has: a moving-side die attached to a moving side of the molding device; and a fixed-side mold attached to a fixed side of the molding device,
the partition member and the protrusion are disposed on the moving-side mold.
18. The forming apparatus as claimed in claim 16,
the mold has: a moving-side die attached to a moving side of the molding device; and a fixed-side mold attached to a fixed side of the molding device,
the partition member and the protrusion are disposed on the moving-side mold.
19. The forming apparatus according to any one of claims 9 to 15,
the partition member is disposed so as to be biased in a direction of projecting into the runner groove by an elastic member, and is retracted from the runner groove against the biasing force of the elastic member by the molding material flowing into the stepped recess.
20. The forming apparatus as claimed in claim 16,
the partition member is disposed so as to be biased in a direction of projecting into the runner groove by an elastic member, and is retracted from the runner groove against the biasing force of the elastic member by the molding material flowing into the stepped recess.
21. The forming apparatus as claimed in claim 17,
the partition member is disposed so as to be biased in a direction of projecting into the runner groove by an elastic member, and is retracted from the runner groove against the biasing force of the elastic member by the molding material flowing into the stepped recess.
22. The forming apparatus of claim 18,
the partition member is disposed so as to be biased in a direction of projecting into the runner groove by an elastic member, and is retracted from the runner groove against the biasing force of the elastic member by the molding material flowing into the stepped recess.
23. The forming apparatus according to any one of claims 9 to 15,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
24. The forming apparatus as claimed in claim 16,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
25. The forming apparatus as claimed in claim 17,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
26. The forming apparatus of claim 18,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
27. The forming apparatus as claimed in claim 19,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
28. The forming apparatus as claimed in claim 20,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
29. The forming apparatus as claimed in claim 21,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
30. The forming apparatus as claimed in claim 22,
the partition members are arranged in pairs in the runner groove so as to sandwich the protrusion,
the regulating surface of each partition member is disposed opposite to the protrusion.
31. A forming method of a forming apparatus, characterized in that,
the forming device comprises: an injection molding device for injection molding a resin; a plurality of molds that are clamped to each other to form a molding space for molding a molded article and a runner groove connected to the molding space; and a partition member provided in at least one of the molds, the partition member being capable of moving in and out of the runner groove to partition the runner groove,
the forming method of the forming device comprises the following steps:
a1 st injection step of connecting the injection device to the mold and injecting a1 st resin flowing from one side of the runner groove into the molding space and the runner groove;
a2 nd injection step of injecting the 2 nd resin, which has flowed from the other side of the gate groove, into the mold by the injection device without waiting for completion of the injection of the 1 st resin;
a restricting step of restricting a flow of the 1 st resin flowing from the one side of the runner groove by the partition member;
a first molding step of molding a joint portion having a wall portion surrounding a part of the partition member in a portion of the first resin 1 on the regulating surface side in the runner groove;
a curing step of curing the joint portion molded with the 1 st resin;
a retracting step of retracting the partition member from the runner groove by a flow of the 2 nd resin from the other side of the runner groove; and
a2 nd molding step of molding a joint portion to be joined to the joint portion molded in the 1 st molding step with the 2 nd resin,
the joint is formed with a smaller volume with respect to the volume of a portion of the adjacent runner that is the same length as the joint.
32. A mold is characterized in that a mold body is provided,
the mold forms a molding space for molding a molded article and a runner groove connected to the molding space,
the mold has: a partition member that partitions inside the runner groove, the partition member including: a regulating surface which can move in and out of the runner groove and regulates the flow of the molding material flowing from one side of the runner groove; and a step recess portion that retracts the partition member from the runner groove by a flow of the molding material from the other side of the runner groove; and
a protrusion protruding toward the regulating surface side in the runner groove, the protrusion being used to form a joint portion having a wall portion covering a part of the partition member in the runner,
the joint is formed with a smaller volume with respect to the volume of a portion of the adjacent runner that is the same length as the joint.
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CN112223635A (en) 2021-01-15
WO2017149936A1 (en) 2017-09-08

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